Question

с объяснением пожалуйста
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Answer 1

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$\displastyle \bf \Big(\frac{1}{3}mn^2\Big)^4\:\:\cdot \Big(3m^3\Big)^2\cdot \Big(-4.5\Big)=-\Big(\frac{1}{3}mn^2\Big)^4\cdot \Big(3m^3\Big)^2\cdot \:4.5=\\\\\\=-\Big(\frac{1}{3}\Big)^4m^4\Big(n^2\Big)^4 \cdot\ 3^2\left(m^3\right)^2\cdot 4.5=\\\\\\=-\Big(\frac{1}{3}\Big)^4n^8\cdot \:3^2m^{4+6}\cdot \:4.5=-3^2\cdot \:4.5\cdot \frac{1}{3^4}m^{10}n^8=\\\\\\=-4.5\cdot \frac{3^2\cdot \:1\cdot \:m^{10}n^8}{3^4}=-4.5\cdot \frac{m^{10}n^8}{9}=-\frac{m^{10}n^8\cdot \:4.5}{9}=\\\\\\-0.5m^{10}n^8$

$\boxed{\displaystyle \bf\Big -0.5m^{10}n^8}$